tofsee | 387ca39819c3cbacbd451cf8dd67a51be3d494417e07121bee55e894f24a40e3

General

Target

f95be8bb765824a57b98f01e4101e6e5_JaffaCakes118.exe
Size

11.6MB
MD5

f95be8bb765824a57b98f01e4101e6e5
SHA1

cf9efeb3adcf6d529494a5064c2eb6278b3346c2
SHA256

387ca39819c3cbacbd451cf8dd67a51be3d494417e07121bee55e894f24a40e3
SHA512

5db9fd1e71f1dc1aeac8166b359ff31c7a04080831c06837ddccf7fd9a3b29e884d8880af5f20f27c1d1774b106d14213a3bf9dae162e1ada5578fdcf33aaf52
SSDEEP

24576:GjDuKnh7YzbKBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBn:Gnh

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

C2

defeatwax.ru

refabyd.info

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee
Creates new service(s) 1 TTPs
persistence

Windows Service
T1543.003
Modifies Windows Firewall 2 TTPs 1 IoCs
evasion

Windows Service
T1543.003

Disable or Modify System Firewall
T1562.004

Processes:

netsh.exe

pid process

2428 netsh.exe

pid	process
2428	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\qwrevki\ImagePath = "C:\\Windows\\SysWOW64\\qwrevki\\aatgspoq.exe"	svchost.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

f95be8bb765824a57b98f01e4101e6e5_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1230272463-3683322193-511842230-1000\Control Panel\International\Geo\Nation	f95be8bb765824a57b98f01e4101e6e5_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

Processes:

aatgspoq.exe

pid process

2948 aatgspoq.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

aatgspoq.exe

description pid process target process

PID 2948 set thread context of 1172 2948 aatgspoq.exe svchost.exe
Launches sc.exe 3 IoCs
Sc.exe is a Windows utlilty to control services on the system.

Processes:

sc.exesc.exesc.exe

pid process

5040 sc.exe
1936 sc.exe
2972 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2948	aatgspoq.exe

description	pid	process	target process
PID 2948 set thread context of 1172	2948	aatgspoq.exe	svchost.exe

pid	process
5040	sc.exe
1936	sc.exe
2972	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

f95be8bb765824a57b98f01e4101e6e5_JaffaCakes118.exeaatgspoq.exe

description	pid	process	target process
PID 2832 wrote to memory of 1988	2832	f95be8bb765824a57b98f01e4101e6e5_JaffaCakes118.exe	cmd.exe
PID 2832 wrote to memory of 1988	2832	f95be8bb765824a57b98f01e4101e6e5_JaffaCakes118.exe	cmd.exe
PID 2832 wrote to memory of 1988	2832	f95be8bb765824a57b98f01e4101e6e5_JaffaCakes118.exe	cmd.exe
PID 2832 wrote to memory of 912	2832	f95be8bb765824a57b98f01e4101e6e5_JaffaCakes118.exe	cmd.exe
PID 2832 wrote to memory of 912	2832	f95be8bb765824a57b98f01e4101e6e5_JaffaCakes118.exe	cmd.exe
PID 2832 wrote to memory of 912	2832	f95be8bb765824a57b98f01e4101e6e5_JaffaCakes118.exe	cmd.exe
PID 2832 wrote to memory of 5040	2832	f95be8bb765824a57b98f01e4101e6e5_JaffaCakes118.exe	sc.exe
PID 2832 wrote to memory of 5040	2832	f95be8bb765824a57b98f01e4101e6e5_JaffaCakes118.exe	sc.exe
PID 2832 wrote to memory of 5040	2832	f95be8bb765824a57b98f01e4101e6e5_JaffaCakes118.exe	sc.exe
PID 2832 wrote to memory of 1936	2832	f95be8bb765824a57b98f01e4101e6e5_JaffaCakes118.exe	sc.exe
PID 2832 wrote to memory of 1936	2832	f95be8bb765824a57b98f01e4101e6e5_JaffaCakes118.exe	sc.exe
PID 2832 wrote to memory of 1936	2832	f95be8bb765824a57b98f01e4101e6e5_JaffaCakes118.exe	sc.exe
PID 2832 wrote to memory of 2972	2832	f95be8bb765824a57b98f01e4101e6e5_JaffaCakes118.exe	sc.exe
PID 2832 wrote to memory of 2972	2832	f95be8bb765824a57b98f01e4101e6e5_JaffaCakes118.exe	sc.exe
PID 2832 wrote to memory of 2972	2832	f95be8bb765824a57b98f01e4101e6e5_JaffaCakes118.exe	sc.exe
PID 2832 wrote to memory of 2428	2832	f95be8bb765824a57b98f01e4101e6e5_JaffaCakes118.exe	netsh.exe
PID 2832 wrote to memory of 2428	2832	f95be8bb765824a57b98f01e4101e6e5_JaffaCakes118.exe	netsh.exe
PID 2832 wrote to memory of 2428	2832	f95be8bb765824a57b98f01e4101e6e5_JaffaCakes118.exe	netsh.exe
PID 2948 wrote to memory of 1172	2948	aatgspoq.exe	svchost.exe
PID 2948 wrote to memory of 1172	2948	aatgspoq.exe	svchost.exe
PID 2948 wrote to memory of 1172	2948	aatgspoq.exe	svchost.exe
PID 2948 wrote to memory of 1172	2948	aatgspoq.exe	svchost.exe
PID 2948 wrote to memory of 1172	2948	aatgspoq.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\f95be8bb765824a57b98f01e4101e6e5_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f95be8bb765824a57b98f01e4101e6e5_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2832

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\qwrevki\
2⤵
PID:1988

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\aatgspoq.exe" C:\Windows\SysWOW64\qwrevki\
2⤵
PID:912

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create qwrevki binPath= "C:\Windows\SysWOW64\qwrevki\aatgspoq.exe /d\"C:\Users\Admin\AppData\Local\Temp\f95be8bb765824a57b98f01e4101e6e5_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:5040

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description qwrevki "wifi internet conection"
2⤵
- Launches sc.exe
PID:1936

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start qwrevki
2⤵
- Launches sc.exe
PID:2972

C:\Windows\SysWOW64\netsh.exe
"C:\Windows\System32\netsh.exe" advfirewall firewall add rule name="Host-process for services of Windows" dir=in action=allow program="C:\Windows\SysWOW64\svchost.exe" enable=yes>nul
2⤵
- Modifies Windows Firewall
PID:2428

C:\Windows\SysWOW64\qwrevki\aatgspoq.exe
C:\Windows\SysWOW64\qwrevki\aatgspoq.exe /d"C:\Users\Admin\AppData\Local\Temp\f95be8bb765824a57b98f01e4101e6e5_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2948

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
PID:1172

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\aatgspoq.exe

Filesize
14.3MB

MD5
b740a2c2eb1b2264cc0efb62f7a425da

SHA1
9d8deb9d6ee4d8054b1cefbc82d4574268abfaf4

SHA256
ce24c59acd31c91feaad1e86b81da93668b7be2633c6c2c647a7385e5cc6473b

SHA512
5fc426ac6e1040601450aa607a145ad0d355f5990ae6993970ecacd3c3c5c2c9e6a77388907c09c450e0825a9d1f0997c0dc35fec75ee6b7c0a3a6f56d0cfd31

Download Submit
memory/1172-28-0x0000000000950000-0x0000000000965000-memory.dmp

Filesize
84KB

Download
memory/1172-11-0x0000000000950000-0x0000000000965000-memory.dmp

Filesize
84KB

Download
memory/1172-14-0x0000000000950000-0x0000000000965000-memory.dmp

Filesize
84KB

Download
memory/1172-17-0x0000000000950000-0x0000000000965000-memory.dmp

Filesize
84KB

Download
memory/1172-18-0x0000000000950000-0x0000000000965000-memory.dmp

Filesize
84KB

Download
memory/2832-21-0x00000000006D0000-0x00000000007D0000-memory.dmp

Filesize
1024KB

Download
memory/2832-2-0x0000000002070000-0x0000000002083000-memory.dmp

Filesize
76KB

Download
memory/2832-3-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2832-8-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2832-1-0x00000000006D0000-0x00000000007D0000-memory.dmp

Filesize
1024KB

Download
memory/2832-24-0x0000000002070000-0x0000000002083000-memory.dmp

Filesize
76KB

Download
memory/2948-10-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2948-16-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2948-9-0x0000000000750000-0x0000000000850000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads